President Putin pays floral tribute to Russian subway blast victims

Russian President Vladimir Putin offered floral tribute to victims of a bomb blast that tore through a subway train deep under Russia's second-largest city on Monday, killing 11 people and wounding about 40. Footage has emerged of the immediate aftermath of a bomb blast that tore through a subway train in Russia's second largest city of St. Petersburg on Monday. The video shows passengers trapped inside the stationary train, frantically screaming for help, while others escape through broken windows and doors. The entire St. Petersburg subway system, which serves some 2 million riders a day, was shut down and evacuated. Russia's National Anti-Terrorist Committee said security was immediately tightened at all of the country's key transportation sites, and Moscow officials said that included the subway in the Russian capital.